EP1314603A1 - Low permeation cam lock for plastic fuel tank vapor vent valve - Google Patents
Low permeation cam lock for plastic fuel tank vapor vent valve Download PDFInfo
- Publication number
- EP1314603A1 EP1314603A1 EP02024861A EP02024861A EP1314603A1 EP 1314603 A1 EP1314603 A1 EP 1314603A1 EP 02024861 A EP02024861 A EP 02024861A EP 02024861 A EP02024861 A EP 02024861A EP 1314603 A1 EP1314603 A1 EP 1314603A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- spring
- annular
- access opening
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002828 fuel tank Substances 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 239000013536 elastomeric material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03519—Valve arrangements in the vent line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/69—Redundant disconnection blocking means
- F16B2200/73—Cam locks or thread locks
Definitions
- the present invention relates to mounting of fuel vapor vent valves in plastic fuel tanks and particularly plastic fuel tanks for motor vehicles.
- the fuel tank has a vapor vent valve disposed in the fuel tank and positioned to have the valve inlet located in the vapor dome above the liquid fuel level and the valve outlet connected to a storage device such as a charcoal filled canister for storing fuel vapor when the engine is not running.
- a storage device such as a charcoal filled canister for storing fuel vapor when the engine is not running.
- Such valves are typically installed in the fuel tank through an access opening in the upper wall of the tank which requires adequate sealing of the valve about the opening.
- plastic fuel tanks are formed of material which is suitable for exposure to liquid fuel and vapor but which has a prohibitively high permeability to the vapor. Accordingly the tanks are formed with a non-permeable barrier layer embedded in the wall of the tank to minimize the escape of fuel vapor. However, where an access opening is formed in the upper wall of the tank for installation of the vapor vent valve, the barrier layer is broken and an area subject to vapor permeation is created.
- the present invention provides a technique for positively retaining and sealing a fuel vapor vent valve through an access opening in the upper wall of a plastic fuel tank having an embedded vapor barrier in a manner which seals the vapor barrier layer and also eliminates the need for separate fasteners at installation.
- the vapor vent valve may be supplied as a subassembly complete with a seal ring and a discontinuous locking ring provided thereon. Portions of the locking ring engage torque transmitting surfaces on the valve to prevent relative rotation therebetween; however, limited axial movement of the ring with respect to valve is permitted to facilitate installation on the tank.
- the subassembly is inserted through the access opening with the locking ring registered against the exterior side of the access opening.
- the subassembly is then rotated and the edge of the locking ring engages and feeds through a slit formed in the edge of the access opening; and, upon continued rotation, the locking ring feeds axially completely through the slit until fully positioned within and engaged with the interior surface of the tank wall with portions of the locking ring engaging the exterior of the valve to prevent rotation of the valve once installed.
- valve, seal ring and locking ring may thus form a self-contained subassembly ready for installation and locking in the fuel tank without the need for separate fasteners or tools upon installation on the tank.
- a preferred form of the invention having a subassembly including the valve is indicated generally at 10; and, the fuel tank wall indicated generally at 12.
- the valve has a body with an annular external mounting flange 14 having a hose fitting 16 preferably extending from the axial face thereof with a reduced diameter of annular portion 18 formed on the undersurface of the flange 14 with an annular seal ring 20 received thereover.
- a further reduced diameter or lower portion 22 extends downwardly from the portion 18 and has at least one, and preferably a plurality, of torque transmitting surfaces which may take the form of axially extending recesses or grooves 24 formed therein in circumferentially spaced arrangement.
- a locking ring 26 preferably formed of spring material preferably has a radial slit 28 formed therethrough rendering the ring discontinuous with one edge thereof inclined to the plane of the ring form an axial lead portion denoted by reference numeral 30.
- the inner periphery of the ring 26 has at least one, and preferably a plurality, of torque transmitting surfaces corresponding to those on the valve and which may take the form of radially inwardly extending tabs or lugs 32 formed thereon, which lugs are each engaged in one of the grooves 24 upon assembly of the ring over the reduced diameter portion 22 of the valve as shown in FIG. 1.
- FIGS. 2 and 5 a portion of the wall of the tank 20 is shown with a vapor barrier layer 34 is shown broken by formation of an annular groove 36 in the outer surface of the tank wall, in the manner of a counterbore, about a smaller diameter access bore 38 formed through the wall of the tank.
- the counterbore or annular groove is formed preferably by machining to provide dimensionally accurate surfaces for installation and sealing of the valve.
- bore 38 and annular groove 36 are formed in the top wall of the tank; however, it will be understood they may be formed in any convenient area of the tank wall appropriate for proper function of the vent valve.
- a radially extending slit 40 which is inclined to the axis of the opening, is formed in the shoulder 42; and, the width of the slit is sufficiently greater than the thickness of the locking ring 26 to permit ease of passage therethrough.
- the subassembly 10 is shown partially installed with the reduced diameter 22 of the valve inserted through the access opening 38 and with the axial lead 30 of the locking ring 26 entered into the slit 40 by an initial rotation of the subassembly 10.
- the recesses or grooves 24 are of sufficient axial length on the reduced diameter 22 of the valve body to enable the necessary axial movement of the lugs 32 engaged therein without disengagement of the lugs 32 from the grooves 24.
- valve is shown completely installed wherein the subassembly 10 has been rotated further from the position of FIG. 3 sufficiently to feed the locking ring 26 entirely through the slit 40 and to position the locking ring inside the tank and engaging the undersurface of the tank wall 12.
- annular sealing ring 20 engages the wall 36 of the access opening and the diameter 18 of the valve to seal therebetween.
- annular seal 20 is shown in dashed outline as sealing against the diameter 36 of the access opening and the shoulder 42 and thus seals the edges of the vapor barrier layer 34 in the tank wall.
- the present invention thus provides a vapor vent valve which may, if desired, have a seal ring and locking ring disposed therewith forming a subassembly to facilitate installation.
- the valve Upon insertion of the lower portion of the valve into an access opening in a fuel tank, the valve is positively retained and sealed therein by rotation of the valve to feed the locking ring through a slit formed in the access open of the tank wall. Thereafter the locking ring engages the inner surface of the tank wall and the valve to retain the valve in the installed position.
- the valve of the present invention is thus capable of simple mechanical installation, locking and being sealed into a fuel tank access opening without the need for separate fasteners or tools.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
Description
Claims (14)
- A method of mounting and sealing a vapor vent valve through an access opening in the top of a fuel tank comprising:(a) forming at least one recess in the periphery of a first portion of the valve for extending into said opening;(b) disposing an annular flexible sealing ring on the valve;(c) disposing an annular spring on the valve and engaging said at least one recess with certain portions of said spring and preventing relative rotation therebetween and permitting limited axial movement of the spring on the valve;(d) forming an annular shoulder in the access opening of the tank and forming a slit in the shoulder and inserting said first portion of the valve in the access opening and engaging one end of said spring in said slot; and,(e) rotating the valve from the exterior of the tank and feeding said spring through said slit until the spring passes through said slit and is completely within the interior of the tank; and,(f) sealing said access opening with said sealing ring and retaining said valve in said access openings with said spring.
- The method defined in claim 1, wherein said step of forming at least one recess includes forming a plurality of recesses in circumferentially spaced arrangement.
- The method defined in claim 1, wherein said step of disposing an annular spring includes disposing a substantially flat discontinuous annular spring.
- The method defined in claim 1, wherein said step of engaging said at least one recess includes forming a radially inwardly extending projection on said spring.
- The method defined in claim 1, wherein said step of forming at least one recess includes forming a plurality of recesses in circumferentially spaced arrangement; and, said step of engaging includes forming a plurality of radially inwardly extending projections on said spring and engaging each of said recesses with one of said projections.
- The method defined in claim 1, wherein the step of forming an annular shoulder includes removing material and exposing an annular region of a vapor impermeable layer of the tank; and, the step of sealing the access opening includes contacting said exposed region of said impermeable layer with said annular sealing ring.
- The method defined in claim 6, wherein the step of removing material includes machining.
- The method defined in claim 1, wherein said step of sealing includes disposing said flexible seal ring in the annular shoulder.
- A low permeation cam locking mounting of a vapor vent valve through an access opening in the upper wall of plastic fuel tank compromising:(a) a vent valve body having an outlet for communicating fuel vapor therethrough externally of the tank float operated valving portion for insertion into said tank opening, said valve body having at least one recess formed on the periphery thereof;(b) an annular spring member having first and second peripheral ends received on said valve body with portions of said spring engaging said recess and preventing relative rotation of said spring with respect to said body, said recess permitting limited axial movement of said spring;(c) an annular flange formed in the periphery of the access opening with a slit in said flange;(d) an annular seal disposed about said body wherein upon insertion of said valve body in said access opening said annular seal effects a seal between said body and the periphery of said access opening, and upon rotation of said valve body therein, said first end of said spring engages said slit, and upon further rotation thereof said spring feeds through said slit and said second end is passed through said slit and said spring registers against the inside surface of said tank upper wall retaining said valve in said opening.
- The mounting as defined in claim 9, wherein the edge of a vapor impervious barrier layer of material is exposed in the periphery of said access opening and is contacted by said annular seal.
- The mounting as defined in claim 10, wherein said exposed edge of said impervious barrier layer is formed by removing material from said access opening.
- The mounting as defined in claim 9, wherein said spring has a relatively thin flat annular configuration.
- The mounting as defined in claim 9, wherein said annular seal is formed of elastomeric material.
- The mounting as defined in claim 9, wherein said first end of said spring is formed obliquely.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/990,057 US6637778B2 (en) | 2001-11-21 | 2001-11-21 | Low permeation cam lock for plastic fuel tank vapor vent valve |
US990057 | 2001-11-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1314603A1 true EP1314603A1 (en) | 2003-05-28 |
EP1314603B1 EP1314603B1 (en) | 2004-11-03 |
Family
ID=25535713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02024861A Expired - Fee Related EP1314603B1 (en) | 2001-11-21 | 2002-11-08 | Low permeation cam lock for plastic fuel tank vapor vent valve |
Country Status (9)
Country | Link |
---|---|
US (1) | US6637778B2 (en) |
EP (1) | EP1314603B1 (en) |
JP (1) | JP2003182390A (en) |
KR (1) | KR20030041823A (en) |
BR (1) | BR0205044A (en) |
CA (1) | CA2411079A1 (en) |
DE (1) | DE60201807T2 (en) |
MX (1) | MXPA02011452A (en) |
TW (1) | TW567157B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1514718A2 (en) * | 2003-09-15 | 2005-03-16 | Eaton Corporation | Mounting a pass-through on a plastic fuel tank |
FR2869842A1 (en) | 2004-05-07 | 2005-11-11 | Inergy Automotive Systems Res | DEVICE FOR FASTENING A COMPONENT TO A HOLLOW BODY, FASTENING METHOD THEREOF, FUEL TANK |
EP2689951A1 (en) * | 2012-07-24 | 2014-01-29 | Yachiyo Industry Co., Ltd. | Hollow container and apparatus for manufacturing same |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6915812B2 (en) * | 2000-09-12 | 2005-07-12 | Alfmeier Corporation | Low permeation weldable fuel tank assembly |
WO2003047047A1 (en) * | 2001-11-21 | 2003-06-05 | Bal Seal Engineering Co., Inc. | Connector for latching and carrying current capabilities with tooless connection |
US6966330B2 (en) | 2003-08-27 | 2005-11-22 | Alfmeier Corporation | Weldring with locking arrangement for valve assembly |
US7882823B2 (en) * | 2006-02-13 | 2011-02-08 | Eaton Corporation | Double shut-off refueling valve |
KR100887821B1 (en) | 2007-11-06 | 2009-03-09 | 현대자동차주식회사 | Vacuum tank of variable intake system |
US20090127805A1 (en) * | 2007-11-20 | 2009-05-21 | Eaton Corporation | Assembly for Sealing a Component and Method |
PL2566715T3 (en) * | 2010-05-06 | 2016-11-30 | Vehicle fuel tank | |
US9994101B2 (en) | 2010-05-06 | 2018-06-12 | Jeff Yager | Vehicle fuel tank |
US8807601B2 (en) * | 2011-03-01 | 2014-08-19 | Evergreen Tool Co., Inc. | Compression seal assembly |
US9599076B2 (en) | 2011-03-03 | 2017-03-21 | Denso International America, Inc. | Fuel tank locking ring mounted fuel pump controller |
US9102445B2 (en) * | 2011-04-27 | 2015-08-11 | Caterpillar Inc. | Tank assembly having twist-and-lock mounting flange |
DE102015006375B3 (en) * | 2015-05-20 | 2016-09-15 | Audi Ag | Internal combustion engine |
US11413958B2 (en) | 2018-11-30 | 2022-08-16 | Honda Motor Co., Ltd. | Fuel cut-off unit attachment structure |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5083583A (en) * | 1990-09-04 | 1992-01-28 | G.T. Products, Inc. | Fuel tank vapor vent valve and seal |
US5901733A (en) * | 1996-01-31 | 1999-05-11 | Nissan Motor Co., Ltd. | Valve for detecting liquid surface |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
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US477308A (en) * | 1892-06-21 | Faucet | ||
US766083A (en) * | 1903-06-25 | 1904-07-26 | Alfred Monsell Sprainger Watts | Means for attaching draw-off taps to drums, &c. |
US1062635A (en) * | 1911-03-08 | 1913-05-27 | Clements Co | Attachment for sheet-metal constructions. |
US1159685A (en) * | 1913-01-28 | 1915-11-09 | Henry B Killefer | Faucet. |
US1319124A (en) * | 1918-08-14 | 1919-10-21 | Abner G Showers | Tank connection. |
US1398083A (en) * | 1919-12-15 | 1921-11-22 | Elmer S Stack | Pipe-coupling |
US1401584A (en) * | 1920-05-04 | 1921-12-27 | Albert F Cizek | Conduit device for tapping cans |
US2241793A (en) * | 1934-08-02 | 1941-05-13 | American Flange & Mfg | Bung or discharge hole formation in a sheet metal container wall |
US2411761A (en) * | 1945-06-09 | 1946-11-26 | Russell Electric Company | Retaining washer and the like |
US3347293A (en) * | 1965-12-23 | 1967-10-17 | Magna Driver Corp | Removable bit construction for screwdrivers and the like |
US3477745A (en) * | 1968-03-11 | 1969-11-11 | Allied Insulation Co | Quick connection of pipe to ducting |
US3650551A (en) * | 1971-02-08 | 1972-03-21 | Borg Warner | Self-sealing tank connector |
US3915477A (en) * | 1974-05-03 | 1975-10-28 | Automation Ind Inc | Duct fitting |
US4343581A (en) * | 1979-05-21 | 1982-08-10 | Waldes Kohinoor, Inc. | Double-bevel spring retaining ring |
US4906150A (en) * | 1985-07-17 | 1990-03-06 | Bennett Bruce A | Locking fastener |
US6212746B1 (en) * | 1999-10-27 | 2001-04-10 | Hill-Rom, Inc. | Retaining ring installation apparatus |
US6379130B1 (en) * | 2000-06-09 | 2002-04-30 | Tecumseh Products Company | Motor cover retention |
US6520545B2 (en) * | 2000-12-08 | 2003-02-18 | Sartorius Ag | Fluid connection adapter assembly |
-
2001
- 2001-11-21 US US09/990,057 patent/US6637778B2/en not_active Expired - Lifetime
-
2002
- 2002-10-25 TW TW091124982A patent/TW567157B/en active
- 2002-11-04 CA CA002411079A patent/CA2411079A1/en not_active Abandoned
- 2002-11-08 EP EP02024861A patent/EP1314603B1/en not_active Expired - Fee Related
- 2002-11-08 DE DE60201807T patent/DE60201807T2/en not_active Expired - Lifetime
- 2002-11-15 JP JP2002332306A patent/JP2003182390A/en not_active Withdrawn
- 2002-11-20 KR KR1020020072267A patent/KR20030041823A/en not_active Application Discontinuation
- 2002-11-21 MX MXPA02011452A patent/MXPA02011452A/en unknown
- 2002-11-21 BR BR0205044-7A patent/BR0205044A/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5083583A (en) * | 1990-09-04 | 1992-01-28 | G.T. Products, Inc. | Fuel tank vapor vent valve and seal |
US5901733A (en) * | 1996-01-31 | 1999-05-11 | Nissan Motor Co., Ltd. | Valve for detecting liquid surface |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1514718A2 (en) * | 2003-09-15 | 2005-03-16 | Eaton Corporation | Mounting a pass-through on a plastic fuel tank |
EP1514718A3 (en) * | 2003-09-15 | 2005-07-06 | Eaton Corporation | Mounting a pass-through on a plastic fuel tank |
FR2869842A1 (en) | 2004-05-07 | 2005-11-11 | Inergy Automotive Systems Res | DEVICE FOR FASTENING A COMPONENT TO A HOLLOW BODY, FASTENING METHOD THEREOF, FUEL TANK |
WO2005108144A2 (en) | 2004-05-07 | 2005-11-17 | Inergy Automotive Systems Research (Société Anonyme) | Device for attaching a component to a hollow body and fuel system for motor vehicles using the device |
WO2005108144A3 (en) * | 2004-05-07 | 2005-12-29 | Inergy Automotive Systems Res | Device for attaching a component to a hollow body and fuel system for motor vehicles using the device |
EP2689951A1 (en) * | 2012-07-24 | 2014-01-29 | Yachiyo Industry Co., Ltd. | Hollow container and apparatus for manufacturing same |
Also Published As
Publication number | Publication date |
---|---|
CA2411079A1 (en) | 2003-05-21 |
MXPA02011452A (en) | 2003-05-30 |
KR20030041823A (en) | 2003-05-27 |
TW567157B (en) | 2003-12-21 |
EP1314603B1 (en) | 2004-11-03 |
JP2003182390A (en) | 2003-07-03 |
US20030094763A1 (en) | 2003-05-22 |
BR0205044A (en) | 2003-09-16 |
DE60201807D1 (en) | 2004-12-09 |
DE60201807T2 (en) | 2005-10-27 |
US6637778B2 (en) | 2003-10-28 |
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